f dad bought it brand new off the showroom floor after high school originally it had a straight that only lasted til miles before he needed more power lol he swapped in a built up bored to ci ported dve heads comp cam noisy timing gear set and some other goodies dana with yukon axles and cryo treated gears and yukon joints rear is a locked with yukon axles and gears completely built c tranny with fully manual valve body and a bw tcase the truck now only has miles even less on the tranny itll clear s but im stuck with my old tiny s for now shes a brute and i get about mpg on my daily commute lol